/Engine/Source/Runtime/UMG/Public/Components/NamedSlot.h
Allows you to expose an external slot for your user widget. When others reuse your user control, they can put whatever they want in this named slot.
class UNamedSlot : public [UContentWidget](API\Runtime\UMG\Components\UContentWidget)
bool
bExposeOnInstanceOnly
Named slots exposed on the instance only follow a slightly different set of rules.
TSharedPtr<SBo...
MyBox